Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Mitchell M. Johns"'
Publikováno v:
Geoderma. :310-318
Land application is a common method for treatment and disposal/reuse of process water and solids from food processing in Central Valley California, USA. Application rates are commonly based on N as contamination of ground and surface waters are of en
Autor:
James W. Bauder, Mitchell M. Johns
Publikováno v:
Soil Science Society of America Journal. 71:1893-1901
Food processing frequently results in substantial land application of wastewater of impaired quality, which requires consideration of soil and groundwater degradation. Of particular concern is the potential for impact by high organic loadings from th
Publikováno v:
Journal of Chromatography A. 879:169-175
Granular activated carbons (GACs) made from agricultural by-products were investigated as adsorbents for short path thermal desorption gas chromatographic analysis of selected polar and nonpolar organic compounds. GACs made from macadamia nut, black
Autor:
Mitchell M. Johns, Wayne E. Marshall, Lynda H. Wartelle, Andrew J. McAloon, Christopher A. Toles
Publikováno v:
Bioresource Technology. 71:87-92
A series of phosphoric-acid activated carbons were made from almond shells using six different activation or activation/oxidation methods. The carbons were compared to each other and to two commercial carbons in an effort to ascertain the relative va
Publikováno v:
Journal of Chemical Technology & Biotechnology. 74:1037-1044
Pecan shell chars were activated using steam, carbon dioxide (CO2), or phosphoric acid (H3PO4) to produce granular activated carbons (GACs). The GACs were characterized for select physical, chemical and adsorption properties. Air oxidation of the GAC
Publikováno v:
Bioresource Technology. 69:263-268
A method was developed to enhance metal ion adsorption of soybean hulls for wastewater treatment using copper ion (Cu2+) as a typical metal ion. Hulls, extracted with 0.1 N NaOH, were modified with different citric acid (CA) concentrations (0.1-1.2 M
Publikováno v:
Bioresource Technology. 69:45-51
Twenty-four granular activated carbons (GACs) made from mixtures of four binders (coal tar, sugarcane molasses, sugar beet molasses, corn syrup) and three agricultural by-products (rice hulls, rice straw, sugarcane bagasse) were evaluated for their a
Publikováno v:
Bioresource Technology. 68:247-254
Four binders (coal tar, sugarcane molasses, sugar beet molasses, corn syrup) were mixed with three agricultural by-products (rice hulls, rice straw, sugarcane bagasse) in different combinations and these mixtures transformed into granular activated c
Publikováno v:
Carbon. 37:1207-1214
Nutshells from agriculturally important nut crops (almond, black walnut, English walnut, macadamia nut and pecan) were converted to granular activated carbon using phosphoric acid activation in nitrogen or air. Surface functional groups (carbonyl, ph
Publikováno v:
Journal of Chemical Technology & Biotechnology. 72:255-263
Almond, pecan, English walnut, black walnut and macadamia nut shells were chosen as hard, lignocellulosic precursors for the production of granular activated carbons (GACs). They were activated with H3PO4 under a variety of conditions. Following acti